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Homework Help: Acceleration and Force?

  1. Apr 14, 2010 #1
    1. The problem statement, all variables and given/known data
    A car can accelerate with a maximum acceleration of 3m/s2. What is its maximum acceleration if it is towing another car just like itself.


    2. Relevant equations
    With so little information I'm not sure that you need equations to answer this question.


    3. The attempt at a solution
    My only thought is that since the car is is towing another car just like itself that it would cause the acceleration to decrease by half? Making the new maximum acceleration 1.5m/s2?
     
  2. jcsd
  3. Apr 14, 2010 #2

    kuruman

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    Your thought is correct, but it is based on an equation. What equation is that?
     
  4. Apr 14, 2010 #3
    Is it FNET=ma?
     
  5. Apr 15, 2010 #4

    kuruman

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    Correct. Assuming that FNet denotes the force provided by the engine minus all friction-like forces, if you keep this force constant and double the mass that has to be accelerated, the acceleration will have to be half as much to keep the product "ma" the same.
     
    Last edited: Apr 15, 2010
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